Math Problem Statement
Using the digits 1,2,3,4,5 to create a 4 digit number sequence by combining two of the digits at the end of the sequence, the last two digits, example; 1, 2, 3, 45 or 2, 3,4, 51 or 4, 5, 1, 23...list all possible combinations in order
Solution
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Math Problem Analysis
Mathematical Concepts
Combinatorics
Permutations
Formulas
nPr = n! / (n - r)! (Permutations formula)
Combinations for two digits = (remaining digits)!
Theorems
Permutation theorem
Suitable Grade Level
Grades 7-10
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